Review of Dufour 4800
Basic specs.
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The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season.
The boat is equipped with 7-9 berths.
Unknown keel type
The keel is made of iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated.
The boat can only enter major marinas as the draft is about 1.85 - 1.95 meter (6.07 - 6.37 ft) dependent on the load. See immersion rate below.
Dufour 4800 is typically equipped with an inboard Volvo Penta MD2B diesel engine at 25 hp (18 kW).
Sailing characteristics
This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.
What is Capsize Screening Formula (CSF)?
The capsize screening value for Dufour 4800 is 1.98, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Dufour 4800 is about 232 kg/cm, alternatively 1302 lbs/inch.
Meaning: if you load 232 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1302 lbs cargo on the boat it will sink 1 inch.
Sailing statistics
This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.
What is L/B (Length Beam Ratio)?
The l/b ratio for Dufour 4800 is 3.15.
The ballast ratio for Dufour 4800 is 48%.
SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 24.30
Maintenance
If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.
| Usage | Length | Diameter | ||
| Jib sheet | 10.5 m | (34.3 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 10.5 m | (34.3 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 26.2 m | (85.8 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 23.0 m | (75.5 feet) | 12 mm | (1/2 inch) |
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